How To Fix: Firewire IRQ Errors on Reboot

I would like to share another discovery. This one fixed my firewire IRQ
errors when rebooting my ThinkPad T61.

(Not-So-Obligatory) Disclaimer:
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While, I do not notice any change in overall functionality of the laptop
as a result of this fix, I also do not know what the referenced setting
is really used for. Do this at your own risk! I hold no responsibility
for the outcome!